I do not object to logging of #bitcoin-dev. In fact, sometimes I wish a real-time log was available when I get disconnected during a conversation. And sometimes it's nice to go back and read a prior conversation.
But I understand that some are uncomfortable with a log being kept, despite it being a public channel that anyone can secretly log anytime. So redacting those member's lines is a good compromise, as long as it's made obvious each line that was redacted. Don't show who's line it was; just indicate that someone unknown said something unknown, so there won't appear to be confusing one-sided conversations.